With the development of network technology, the resources provided by internet are being enriched constantly.Whereas, in our country, university＇ s utilization ratio of resources on internet is low currently. It is well known that there is a bottleneck between public network and CERNET, which causes the very slow velocity to access each other and limites the enhancement of network application＇ s level in some universities. Through example of double-export-links campus network in our college,this paper introduced how to access outer resources for inner users or to access our college＇ s webserver for outer guests at a high speed by using double-export-links. This method not only solved the problem of speeding the velocity of conneetion between campus network and public network but also realized the chain circuit redundancy and inner network＇ s safety.